#3661 gantt chart items duplicating

[rbessin]

Changes

• Added seed data in order to have a package that is blocked by two or more other packages
• Made ids consistent in the transform functions for WorkPackages, Projects and Tasks instead of using random UUIDs
• Render all WorkPackages once rather than through two different pipelines; previously --> main pipeline for roots + blocked pipeline for blocked ==> now --> main pipeline for everything
• Using blocking array solely for arrow rendering between packages
• Moved the ArcherContainer up a level from the TaskBar to the ChartSection in order to have it encompass all WorkPackages within the same project
• Deleted BlockedGanttTaskView.tsx since it was no longer used

Screenshots

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Closes # (issue #3661 )

[gcooper407]

This is all awesome, really great job on this